pci_ep: layerscape: Add the PCIe EP mode support for lx2160a-v2

Add the PCIe EP mode support for lx2160a-v2 platform.
Signed-off-by: NXiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: NHou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: NPriyanka Jain <priyanka.jain@nxp.com>

drivers/pci/pcie_layerscape.h

@@ -100,7 +100,7 @@
 
 #define PCIE_SRIOV_VFBAR0	0x19C
 
-#define PCIE_MASK_OFFSET(flag, pf) ((flag) ? 0 : (0x1000 + 0x20000 * (pf)))
+#define PCIE_MASK_OFFSET(flag, pf, off) ((flag) ? 0 : (0x1000 + (off) * (pf)))
 
 /* LUT registers */
 #define PCIE_LUT_UDR(n)		(0x800 + (n) * 8)
@@ -139,6 +139,12 @@
 #define LS1021_PEXMSCPORTSR(pex_idx)	(0x94 + (pex_idx) * 4)
 #define LS1021_LTSSM_STATE_SHIFT	20
 
+/* LX2160a PF1 offset */
+#define LX2160_PCIE_PF1_OFFSET	0x8000
+
+/* layerscape PF1 offset */
+#define LS_PCIE_PF1_OFFSET	0x20000
+
 struct ls_pcie {
 	void __iomem *dbi;
 	void __iomem *lut;
@@ -170,6 +176,7 @@ struct ls_pcie_ep {
 	void __iomem *addr;
 	u32 cfg2_flag;
 	u32 sriov_flag;
+	u32 pf1_offset;
 	u32 num_ib_wins;
 	u32 num_ob_wins;
 	u8 max_functions;

drivers/pci/pcie_layerscape_ep.c

@@ -198,7 +198,8 @@ static void ls_pcie_setup_ep(struct ls_pcie_ep *pcie_ep)
 			writel(0, pcie->dbi + PCIE_MISC_CONTROL_1_OFF);
 
 			bar_base = pcie->dbi +
-				   PCIE_MASK_OFFSET(pcie_ep->cfg2_flag, pf);
+				   PCIE_MASK_OFFSET(pcie_ep->cfg2_flag, pf,
+						    pcie_ep->pf1_offset);
 
 			if (pcie_ep->cfg2_flag) {
 				ctrl_writel(pcie,
@@ -271,6 +272,11 @@ static int ls_pcie_ep_probe(struct udevice *dev)
 
 	svr = SVR_SOC_VER(get_svr());
 
+	if (svr == SVR_LX2160A)
+		pcie_ep->pf1_offset = LX2160_PCIE_PF1_OFFSET;
+	else
+		pcie_ep->pf1_offset = LS_PCIE_PF1_OFFSET;
+
 	if (svr == SVR_LS2080A || svr == SVR_LS2085A)
 		pcie_ep->cfg2_flag = 1;
 	else